CN104858949A - Titanium dioxide/wood composite material making method - Google Patents

Abstract

The invention discloses a titanium dioxide/wood composite material making method, including six steps of wood pretreatment, wood modification agent preparation, wood modification liquid preparation, dipping treatment, aging treatment and post-drying treatment; and a wood modification agent comprises n-butyl titanate, anhydrous ethanol, glacial acetic acid, water, diammonium phosphate, zinc borate, ammonium molybdate, sodium octoborate, carbendazim, dodecyl dimethyl benzyl ammonium chloride, sodium dodecyl benzene sulfonate and silicon sol. The beneficial effects are that the titanium dioxide/wood composite material making method has the advantages of simple treatment process, high efficiency, low cost, strong permeability, and long-term stability, and the like, the n-butyl titanate as a precursor for formation of titanium dioxide, the titanium dioxide has broad spectrum, high efficient and durable antibacterial effect, and the bacterial resistance, corrosion resistance, flame resistance, surface hardness, wear resistance, bending resistance, bend elastic modulus, processing good properties, dimension stability, and the like of the processed wood are greatly improved.

Description

A kind of manufacture method of titanium dioxide/Wood composite material

Technical field

The present invention relates to wood producing technical field, specifically a kind of manufacture method of titanium dioxide/Wood composite material.

Background technology

Timber as a kind of resource of natural reproducible, and has beautiful texture, color and luster is natural, texture is comfortable, plasticity is good, be easy to the advantages such as processing, thus by the ideal material as construction and decoration and Furniture manufacture.But timber is owing to contacting with oxygen, light, moisture for a long time, easily by the erosion of entomogenous fungi moth, and easy to change, cracking, wearing and tearing and dampen, also easily burning etc.So, extensive concern is subject to for a long time to the modification of timber always.Titanium dioxide has higher chemical stability, heat endurance and non-migratory, and tasteless, nontoxic, nonirritant, especially have the antibiotic property of wide spectrum, its bacteriostasis rate is high, and antibiotic rate can reach more than 80%, and antibiotic property is good, lastingly antibacterial.Therefore, adopt titanium dioxide to carry out inorganic modified to timber, the good heat endurance of timber, weatherability, antibiotic property etc. can be given, thus there is very high realistic meaning and promotion prospect.

Summary of the invention

The object of the present invention is to provide that a kind of technique is simple, process is efficient and have the manufacture method of the titanium dioxide/Wood composite material of fire retardant, anticorrosive modification concurrently.

The technical solution adopted for the present invention to solve the technical problems is: a kind of manufacture method of titanium dioxide/Wood composite material, comprises the following steps:

(1), timber pretreatment: removed the peel by log, cut after saw cuts open into the specification of required size, dry 8 ~ 24h under the condition of 50 DEG C ~ 80 DEG C, the moisture content controlling timber reaches 8% ~ 25%, then microwave treatment 10 ~ 30min;

(2), preparation Wood modifier: add tetrabutyl titanate 20 ~ 30 mass parts successively to reaction vessel, absolute ethyl alcohol 50 ~ 80 mass parts, glacial acetic acid 0.1 ~ 1 mass parts, stir, then water 300 ~ 450 mass parts is added, add Diammonium phosphate (DAP) 10 ~ 15 mass parts again, Firebrake ZB 6 ~ 9 mass parts, ammonium molybdate 1 ~ 4 mass parts, stir 10 ~ 20min, then eight Boratex 8 ~ 12 mass parts are added, carbendazim 9 ~ 12 mass parts, dodecyl benzyl dimethyl ammonium chloride 6 ~ 10 mass parts, neopelex 1 ~ 2 mass parts, stir 10 ~ 20min, finally add Ludox 25 ~ 40 mass parts, continue stirring 20 ~ 40min, after dispersed, namely Wood modifier obtained used,

(3), preparation Wooden modifying liquid: the Wood modifier that step (2) is obtained is diluted with water to the aaerosol solution that mass percent concentration is 15% ~ 30%, obtains required Wooden modifying liquid;

(4), impregnation process: the timber that step (1) obtains is put into airtight impregnation process tank, vacuumize and to make in tank vacuum at-0.08 ~-0.1MPa, keep 30 ~ 60min, Wooden modifying liquid step (3) prepared again injects impregnation process tank, and make to flood timber completely, then remove vacuum, in process tank, apply 0.6 ~ 1.5MPa air pressure, and be heated to 40 DEG C ~ 75 DEG C, keep 1 ~ 4h;

(5), ripening: pressure relief and reduction temperature, to normal temperature, discharge remaining modification liquid, take out timber and are placed in indoor still aging 2 ~ 5 days;

(6), rear drying process: the timber that step (5) obtains is moved to dry kiln and dries, baking temperature 90 DEG C ~ 115 DEG C, drying time, 12 ~ 36h, was then cooled to room temperature, i.e. obtained described titanium dioxide/Wood composite material.

Step (1) described log is suitable for any timber, comprises poplar, birch, nanmu, Eucalyptus, China fir, pine etc.

Silica quality content in step (2) described Ludox is 25% ~ 30%.

The invention has the beneficial effects as follows, the present invention has that treatment process is simple, efficient, cost is low, permeability is strong, the long-acting advantage such as stable, and be that presoma forms titanium dioxide and has wide spectrum, efficient, lasting antibacterial action with tetrabutyl titanate, timber after treatment is all largely increased in antibacterial, anticorrosion, fire-retardant, case hardness, wearability, bending strength, Deflection Modulus of Elasticity, processing superperformance, dimensional stability etc.

Detailed description of the invention

Technical scheme of the present invention is further illustrated below in conjunction with concrete preferred embodiment.

A manufacture method for titanium dioxide/Wood composite material, comprises the following steps:

(1), timber pretreatment: removed the peel by log, cut after saw cuts open into the specification of required size, dry 8 ~ 24h under the condition of 50 DEG C ~ 80 DEG C, the moisture content controlling timber reaches 8% ~ 25%, then microwave treatment 10 ~ 30min; Wherein, described log is suitable for any timber, comprises poplar, birch, nanmu, Eucalyptus, China fir, pine etc.

(2), preparation Wood modifier: add tetrabutyl titanate 20 ~ 30 mass parts successively to reaction vessel, absolute ethyl alcohol 50 ~ 80 mass parts, glacial acetic acid 0.1 ~ 1 mass parts, stir, then water 300 ~ 450 mass parts is added, add Diammonium phosphate (DAP) 10 ~ 15 mass parts again, Firebrake ZB 6 ~ 9 mass parts, ammonium molybdate 1 ~ 4 mass parts, stir 10 ~ 20min, then eight Boratex 8 ~ 12 mass parts are added, carbendazim 9 ~ 12 mass parts, dodecyl benzyl dimethyl ammonium chloride 6 ~ 10 mass parts, neopelex 1 ~ 2 mass parts, stir 10 ~ 20min, finally add Ludox 25 ~ 40 mass parts, continue stirring 20 ~ 40min, after dispersed, namely Wood modifier obtained used, wherein, the silica quality content in described Ludox is 25% ~ 30%.

(3), preparation Wooden modifying liquid: the Wood modifier that step (2) is obtained is diluted with water to the aaerosol solution that mass percent concentration is 15% ~ 30%, obtains required Wooden modifying liquid;

(4), impregnation process: the timber that step (1) obtains is put into airtight impregnation process tank, vacuumize and to make in tank vacuum at-0.08 ~-0.1MPa, keep 30 ~ 60min, Wooden modifying liquid step (3) prepared again injects impregnation process tank, and make to flood timber completely, then remove vacuum, in process tank, apply 0.6 ~ 1.5MPa air pressure, and be heated to 40 DEG C ~ 75 DEG C, keep 1 ~ 4h;

(5), ripening: pressure relief and reduction temperature, to normal temperature, discharge remaining modification liquid, take out timber and are placed in indoor still aging 2 ~ 5 days;

(6), rear drying process: the timber that step (5) obtains is moved to dry kiln and dries, baking temperature 90 DEG C ~ 115 DEG C, drying time, 12 ~ 36h, was then cooled to room temperature, i.e. obtained described titanium dioxide/Wood composite material.

Claims (1)

1. a manufacture method for titanium dioxide/Wood composite material, is characterized in that, comprises the following steps:

(1), timber pretreatment: removed the peel by log, cut after saw cuts open into the specification of required size, dry 8 ~ 24h under the condition of 50 DEG C ~ 80 DEG C, the moisture content controlling timber reaches 8% ~ 25%, then microwave treatment 10 ~ 30min;

(2), preparation Wood modifier: add tetrabutyl titanate 20 ~ 30 mass parts successively to reaction vessel, absolute ethyl alcohol 50 ~ 80 mass parts, glacial acetic acid 0.1 ~ 1 mass parts, stir, then water 300 ~ 450 mass parts is added, add Diammonium phosphate (DAP) 10 ~ 15 mass parts again, Firebrake ZB 6 ~ 9 mass parts, ammonium molybdate 1 ~ 4 mass parts, stir 10 ~ 20min, then eight Boratex 8 ~ 12 mass parts are added, carbendazim 9 ~ 12 mass parts, dodecyl benzyl dimethyl ammonium chloride 6 ~ 10 mass parts, neopelex 1 ~ 2 mass parts, stir 10 ~ 20min, finally add Ludox 25 ~ 40 mass parts, continue stirring 20 ~ 40min, after dispersed, namely Wood modifier obtained used,

(3), preparation Wooden modifying liquid: the Wood modifier that step (2) is obtained is diluted with water to the aaerosol solution that mass percent concentration is 15% ~ 30%, obtains required Wooden modifying liquid;

(4), impregnation process: the timber that step (1) obtains is put into airtight impregnation process tank, vacuumize and to make in tank vacuum at-0.08 ~-0.1MPa, keep 30 ~ 60min, Wooden modifying liquid step (3) prepared again injects impregnation process tank, and make to flood timber completely, then remove vacuum, in process tank, apply 0.6 ~ 1.5MPa air pressure, and be heated to 40 DEG C ~ 75 DEG C, keep 1 ~ 4h;

(5), ripening: pressure relief and reduction temperature, to normal temperature, discharge remaining modification liquid, take out timber and are placed in indoor still aging 2 ~ 5 days;

(6), rear drying process: the timber that step (5) obtains is moved to dry kiln and dries, baking temperature 90 DEG C ~ 115 DEG C, drying time, 12 ~ 36h, was then cooled to room temperature, i.e. obtained described titanium dioxide/Wood composite material.